<template>
  <section class="loginContainer">
    <div class="loginInner">
      <div class="login_header">
        <h2 class="login_logo">硅谷外卖</h2>
        <div class="login_header_title">
          <a href="javascript:;" :class="{on:isWay}" @click="isWay=true">短信登录</a>
          <a href="javascript:;" :class="{on:!isWay}" @click="isWay=false">密码登录</a>
        </div>
      </div>
      <div class="login_content">
        <form>
          <div :class="{on:isWay}">
            <section class="login_message">
              <input type="tel" maxlength="11" placeholder="手机号" v-model="phone"/>
              <button
                :disabled="!isRightPhone"
                class="get_verification"
                :class="{black:isRightPhone}"
                @click.prevent="getCode"
              >{{computedTime>0? `还剩${computedTime}s`:"获取验证码"}}
              </button>
            </section>
            <section class="login_verification">
              <input type="tel" maxlength="8" placeholder="验证码" v-model="code"/>
            </section>
            <section class="login_hint">
              温馨提示：未注册硅谷外卖帐号的手机号，登录时将自动注册，且代表已同意
              <a href="javascript:;">《用户服务协议》</a>
            </section>
          </div>
          <div :class="{on:!isWay}">
            <section>
              <section class="login_message">
                <input type="tel" maxlength="11" placeholder="手机/邮箱/用户名" v-model="name"/>
              </section>
              <section class="login_verification">
                <input
                  type="password"
                  maxlength="8"
                  placeholder="密码"
                  v-model="pwd"
                  v-if="!isRightPwd"
                />
                <input type="text" maxlength="8" placeholder="密码" v-model="pwd" v-else/>
                <div
                  class="switch_button"
                  @click="isRightPwd=!isRightPwd"
                  :class="isRightPwd?'on':'off'"
                >
                  <div class="switch_circle" :class="{right:isRightPwd}"></div>
                  <span class="switch_text">{{isRightPwd?"abc":"..."}}</span>
                </div>
              </section>
              <section class="login_message">
                <input type="text" maxlength="11" placeholder="验证码" v-model="captcha"/>
                <img
                  class="get_verification"
                  src="http://localhost:4000/captcha"
                  alt="captcha"
                  @click="getCaptcha"
                />
              </section>
            </section>
          </div>
          <button class="login_submit" @click.prevent="login">登录</button>
        </form>
        <a href="javascript:;" class="about_us">关于我们</a>
      </div>
      <a href="javascript:" class="go_back" @click="goBack">
        <i class="iconfont icon-jiantou2"></i>
      </a>
    </div>
    <!-- 弹出框组件 -->
    <AlertTip :alertText="msg" v-show="showAlert" @closeTip="closeTip"></AlertTip>
  </section>
</template>

<script>
  import {reqSendCode, reqSmsLogin, reqPwdLogin} from "../../api/index.js";
  import {mapActions} from "vuex";
  import AlertTip from "../../components/AlertTip/AlertTip";

  export default {
    name: "Login",
    data() {
      return {
        isWay: true,
        phone: "",//短信登录手机号
        code: "",//短信登录验证码
        computedTime: 0,//验证码按钮倒计时时间，默认为零
        IntervalId: "",//倒计时的定时器名字
        name: "",//密码登录用户名
        pwd: "",//密码登录密码
        captcha: "",//图形验证码
        isRightPwd: false,
        msg: "", //消息提示
        showAlert: false //控制弹窗打开与关闭
      };
    },
    methods: {
      ...mapActions(["recordUser"]),
      //打开弹框
      showAlt(text) {
        this.showAlert = true;
        this.msg = text;
      },
      //关闭弹框
      closeTip() {
        this.showAlert = false;
      },
      goBack() {
        this.$router.go(-1);
      },
      //获取手机短信验证码
      async getCode() {
        //定时器，剩余秒数
        if (!this.computedTime) {
          this.computedTime = 30;
          this.IntervalId = setInterval(() => {
            this.computedTime--;
            if (this.computedTime <= 0) {
              clearInterval(this.IntervalId);
            }
          }, 1000);
        }
        //发送ajax请求，获取验证码
        let result = await reqSendCode({phone: this.phone});
        if (result.code == 1) {
          console.log(result.msg);
        }
      },
      //获取图形验证码
      getCaptcha(e) {
        e.target.src = "http://localhost:4000/captcha?time=" + Date.now();
      },
      //登录提交事件功能
      async login() {
        let result;
        if (this.isWay) {
          //手机号登录
          if (!this.phone) {
            this.showAlt("手机号不能为空");
          }
          if (!this.code) {
            this.showAlt("验证码不正确");
          }
          let data = {
            phone: this.phone,
            code: this.code
          };
          result = await reqSmsLogin(data);
          console.log(result);
        } else {
          //用户名、密码登录
          if (!this.name) {
            this.showAlt("用户名不对");
          }
          if (!this.pwd) {
            this.showAlt("密码不对");
          }
          if (!this.captcha) {
            this.showAlt("图形验证码不对");
          }
          let data = {
            name: this.name,
            pwd: this.pwd,
            captcha: this.captcha
          };
          result = await reqPwdLogin(data);
          console.log(result);
        }
        //将登陆之后相应的数据放到vuex中
        if (result.code == 0) {
          this.recordUser(result.data);
          this.$router.replace("/profile");
        }
      }
    },
    computed: {
      //判断是不是输入正确的手机号码，如果正确验证码按钮可以点击
      isRightPhone() {
        return /^1\d{10}$/.test(this.phone);
      }
    },
    components: {
      AlertTip
    }
  };
</script>

<style scoped lang="stylus">
  @import '../../common/css/mixins.styl'
  .loginContainer
    width 100%
    height 100%
    background #fff

    .loginInner
      padding-top 60px
      width 80%
      margin 0 auto

      .login_header
        .login_logo
          font-size 40px
          font-weight bold
          color #02a774
          text-align center

        .login_header_title
          padding-top 40px
          text-align center

          > a
            color #333
            font-size 14px
            padding-bottom 4px

            &:first-child
              margin-right 40px

            &.on
              color #02a774
              font-weight 700
              border-bottom 2px solid #02a774

      .login_content
        > form
          > div
            display none

            &.on
              display block

            input
              width 100%
              height 100%
              padding-left 10px
              box-sizing border-box
              border 1px solid #ddd
              border-radius 4px
              outline 0
              font 400 14px Arial

              &:focus
                border 1px solid #02a774

            .login_message
              position relative
              margin-top 16px
              height 48px
              font-size 14px
              background #fff

              .get_verification
                position absolute
                top 50%
                right 10px
                transform translateY(-50%)
                border 0
                color #ccc
                font-size 14px
                background transparent

                &.black
                  color #000000

            .login_verification
              position relative
              margin-top 16px
              height 48px
              font-size 14px
              background #fff

              .switch_button
                font-size 12px
                border 1px solid #ddd
                border-radius 8px
                transition background-color 0.3s, border-color 0.3s
                padding 0 6px
                width 30px
                height 16px
                line-height 16px
                color #fff
                position absolute
                top 50%
                right 10px
                transform translateY(-50%)

                &.off
                  background #fff

                  .switch_text
                    float right
                    color #ddd

                &.on
                  background #02a774

                > .switch_circle
                  // transform translateX(27px)
                  position absolute
                  top -1px
                  left -1px
                  width 16px
                  height 16px
                  border 1px solid #ddd
                  border-radius 50%
                  background #fff
                  box-shadow 0 2px 4px 0 rgba(0, 0, 0, 0.1)
                  transition transform 0.3s

                  &.right
                    transform translateX(27px)

            .login_hint
              margin-top 12px
              color #999
              font-size 14px
              line-height 20px

              > a
                color #02a774

          .login_submit
            display block
            width 100%
            height 42px
            margin-top 30px
            border-radius 4px
            background #4cd96f
            color #fff
            text-align center
            font-size 16px
            line-height 42px
            border 0

        .about_us
          display block
          font-size 12px
          margin-top 20px
          text-align center
          color #999

      .go_back
        position absolute
        top 5px
        left 5px
        width 30px
        height 30px

        > .iconfont
          font-size 20px
          color #999
</style>
